/*******************************************************************************
* @copyright: Shenzhen Hangshun Chip Technology R&D Co., Ltd
* @filename:  main.c
* @brief:     Main program body
* @author:    AE Team
* @version:   V1.0.0/2025-07-16
*             1.Initial version
* @log:
*******************************************************************************/


/* Includes ------------------------------------------------------------------*/
#include "main.h"


/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t TimingDelay = 0;

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured,
       this is done through SystemInit() function which is called from startup
       file (KEIL_startup_hk32g003.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_hk32g003.c file
     */

  /* Initialize LEDs and Tamper Button mounted on EVAL board */
  HK_EVAL_LEDInit(LED1);
  HK_EVAL_LEDInit(LED2);
  HK_EVAL_LEDInit(LED3);
  HK_EVAL_PBInit(BUTTON_1, BUTTON_MODE_EXTI);

  /* Check if the system has resumed from IWDG reset */
  if (RCC_GetFlagStatus(RCC_FLAG_IWDGRST) != RESET)
  {
    /* IWDGRST flag set */

    /* Turn on LED1 */
    HK_EVAL_LEDOn(LED1);

    /* Clear reset flags */
    RCC_ClearFlag();
  }
  else
  {
    /* IWDGRST flag is not set */

    /* Turn off LED1 */
    HK_EVAL_LEDOff(LED1);
  }

  /* Setup SysTick Timer for 1 msec interrupts  */
  if (SysTick_Config(SystemCoreClock / 1000))
  {
    /* Capture error */
    while (1)
    {
	}
  }

  /********************* IWDG configuration ***********************************/
  /* Enable IWDG, set reload and window values to 2000 and 1000, respectively.
     In this case the refresh window is:
     (2000-1000) / (LSI/128) = ~468 ms < refresh window < 2000 / (LSI/128) = ~937 ms

        Note: the refresh window may varies due to LSI frequency dispersion
        ----
     */

  /* Enable IWDG (the LSI oscillator will be enabled by hardware) */
  IWDG_Enable();

  /* Enable write access to IWDG_PR and IWDG_RLR registers */
  IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);

  /* Set IWDG Prescaler value to 128 */
  IWDG_SetPrescaler(IWDG_Prescaler_128);

  /* Set IWDG Reload value to 2000 */
  IWDG_SetReload(2000);

  /* Wait until RVU flag is reset to be sure that the reload value
     update operation is completed */
  while(IWDG_GetFlagStatus(IWDG_FLAG_RVU) != RESET)
  {
	  
  }

  /* Set the IWDG window value to 1000 */
  IWDG_SetWindowValue(1000);

  while (1)
  {
    /* Toggle LED2 */
    HK_EVAL_LEDToggle(LED2);

    /* Insert 900 ms delay */
    Delay(900);

    /* Reload IWDG counter */
    IWDG_ReloadCounter();
  }
}

/**
  * @brief  Inserts a delay time.
  * @param  nTime: specifies the delay time length, in 1 ms.
  * @retval None
  */
void Delay(__IO uint32_t nTime)
{
  TimingDelay = nTime;

  while(TimingDelay != 0)
  {
	  
  }
}

/**
  * @brief  Decrements the TimingDelay variable.
  * @param  None
  * @retval None
  */
void TimingDelay_Decrement(void)
{
  if (TimingDelay != 0x00)
  {
    TimingDelay--;
  }
}


#ifdef  USE_FULL_ASSERT

/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t line)
{
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif


